21304745 Hose Clamp | Genuine Volvo Penta Part

🔧 Product Description

A stainless-steel clamp used to secure large wet-exhaust hoses and exhaust-riser connections on selected Volvo Penta D6, D8 and D13 marine engines.

🚤 Compatibility

• Engine Family: D

Full model list at the end of this description.

⚙️ Key Features

• Designed for wet-exhaust hose connections
• Stainless-steel corrosion-resistant construction
• Commonly four required per applicable riser installation
• Engine type: Turbocharged marine diesel
• 4 used per assembly

🔌 Function

Compresses the exhaust hose around the riser or pipe to maintain a gas- and seawater-tight connection.

⚠️ Common Signs of Failure

• Exhaust or water leakage
• Corroded clamp band
• Stripped tightening mechanism
• Hose movement under engine load
• Uneven clamping or damaged hose reinforcement

🛠️ Service Notes

• Match the clamp to the hose outside diameter so the band closes well within its working range rather than at the very end of its travel
• Position it over the spigot behind the bead or barb, with the screw where a driver or spanner can still reach it once everything is refitted
• Tighten to seal, not to crush — an over-tightened worm-drive clamp cuts into soft hose and starts the leak you were trying to stop
• Renew clamps when a hose is changed rather than reusing them, and keep band, housing and screw all marine-grade stainless so the clamp does not corrode against itself
• Where two clamps are fitted to one connection, stagger the screw heads and recheck both after the first running period

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 78467551 and 23034952 - related exhaust risers
• 21231761 - approximately 875 mm exhaust hose
• 21126692 - exhaust-temperature sensor
• 947281 and 23064223 - gaskets

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D13C1-B MH, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-A MP, D13B-H MP, D13B-G MP, D13B-L MP, D13B-E MH, D13B-E MH (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-M MP, D13B-C MP, D13C4-B MP, D13C6-A MP, D13C5-B MP, D13C5-A MP, D13C7-B MP, D13C8-B MP, D13C9-A MP